Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
  • F16H61/26—Generation or transmission of movements for final actuating mechanisms
  • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
  • F16H61/32—Electric motors actuators or related electrical control means therefor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
  • F16H61/26—Generation or transmission of movements for final actuating mechanisms
  • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
  • F16H61/32—Electric motors actuators or related electrical control means therefor
  • F16H2061/323—Electric motors actuators or related electrical control means therefor for power assistance, i.e. servos with follow up action
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
  • F16H61/26—Generation or transmission of movements for final actuating mechanisms
  • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
  • F16H61/32—Electric motors actuators or related electrical control means therefor
  • F16H2061/326—Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/20—Control lever and linkage systems
  • Y10T74/20012—Multiple controlled elements
  • Y10T74/20018—Transmission control
  • Y10T74/2003—Electrical actuator

Definitions

• the present invention relates to an operation range selection mechanism of an automatic transmission that assists the operation of a select lever operated by a driver.
• Patent Document 1 Japanese Patent Application Publication No. 2003-4135
• a torque sensor detects a torque value (operating force) applied to the select lever, and a motor or the like is activated when the detected torque value is equal to or more than a predetermined value. It has a structure to perform motion assist.
• the torque sensor detects the inertia force of the select lever even after the driver finishes the operation of the select lever and releases the select lever force. There was a problem that it might be detected and the operation assist of the select lever might be continued.
• the operation direction of the select lever that generally performs the operation assist is obtained by calculating the operation displacement of the select lever. For this reason, even if the driver actually applies a force to the select lever, the direction of the operation assist can not be specified unless the selector lever is actually moved and the movement displacement is not calculated. There was a problem that was not done.
• a "working range selection mechanism” assists the driver's selection operation when the driver uses the select lever to select the working range of the automatic transmission. It may also be referred to as a gear mechanism, an operation range selection operation assist mechanism, or the like. Disclosure of the invention
• the present invention has been made in view of the above problems, and a first object of the present invention is to detect the inertia force of the select lever by a torque sensor, and after the driver takes his hand off the select lever It is another object of the present invention to provide an automatic transmission operating range selection mechanism which prevents the operation assist of the select lever from being continuously executed.
• a second object of the present invention is to provide an operation range selection mechanism of an automatic transmission capable of performing operation assist when a force is applied to the select lever even when the select lever is not displaced. It is to be.
• an operation range selecting mechanism (operation range selecting operation assisting mechanism) of the present invention, which is used in an automatic transmission having a plurality of operation ranges selected by a select lever,
• An input operation force detector that detects an operation force generated by an operation
• an assist actuator that applies an assist force for performing operation assist of the select lever to the select lever, and the input operation force detection
• An assist force control device for controlling the assist actuator and starting operation assist for the select lever when the value of the operating force detected by the actuator is equal to or greater than a specified value;
• the force controller determines that the operation assistance is performed when the operating force is below a specified value or when the select lever has reached a predetermined position. After the door is stopped, and sets a temporary the specified value to a high ⁇ value.
• the operation force is temporarily detected by the assist force control device.
• the value may be filtered using a low noise filter, and the assist actuator may be controlled on the basis of the operation force subjected to the filter processing. .
• the operation range selection mechanism of the automatic transmission comprises an input operation force detector for detecting an operation force generated by the operation of the select lever, and an operation operation selector for the select lever with respect to the select lever.
• An assist actuator that applies an assist force for performing operation assist, and an operation position of the select lever when the value of the operation force detected by the input operation force detector is equal to or greater than a first specified value. 1 position adjacent to And the assist actuator is controlled to start the operation assist of the select lever in the direction of the one position, and the value of the operating force detected by the input operating force detector is determined.
• Another one of the present inventions is an automatic transmission unit comprising an automatic transmission and any one of the above operating range selecting devices.
• an automobile provided with any one of the above-described operation range selection devices.
• an assist force control device Force is less than the specified value or after the operation assist is stopped when the select lever has reached the specified position, setting the specified value to a high value temporarily causes the inertia to be caused after the operation assist is completed. Even if the torque value temporarily increases due to the torque that is generated, the value of the operating force becomes equal to or higher than the specified value. Therefore, the operation assist can be easily and continuously executed. Can be prevented.
• the detected value of the operation force is temporarily determined. Since the operation force is reduced by applying the low-pass filter and performing the filtering process, the value of the operation force does not easily become equal to or more than the specified value, and it is prevented that the operation assist is continuously performed continuously. It becomes possible.
• the operating position of the select lever when the value of the operating force becomes equal to or greater than the first prescribed value, the operating position of the select lever is adjacent to the assist force control device. If it is determined that it has been moved to the first position and motion assist in the first position direction is started, and the value of the operating force becomes less than the second specified value, the operation position of the select lever is Since it is determined that it has been moved to another position located on the opposite side of one position and movement assistance to the other position direction is started, the select lever Move! / ⁇ ⁇ ⁇ , even when the selection lever is applied to the operation force, in the case where it can perform the operation assist, it was a stable that reflects the driver's will surely It becomes possible to perform operation assistance.
• FIG. 1 is a schematic view showing the configuration of an automatic transmission.
• FIG. 2 is a perspective view showing the detailed structure of the assist actuator.
• FIG. 3 is a block diagram showing an assist control unit.
• FIG. 4 is a perspective view showing a detent structure of the automatic transmission unit.
• FIG. 5 is a flowchart showing assist processing of the select lever in the assist control unit.
• FIG. 6 is a diagram showing the change with time of the torque value detected by the tonolek sensor when the select lever is operated from the P ⁇ R position.
• FIG. 7 is a flowchart showing a process of temporarily changing the threshold when torque due to inertia is generated.
• FIG. 8 is a diagram showing an arithmetic circuit that temporarily changes the threshold when torque due to inertia occurs.
• FIG. 9 is a diagram showing state transition in the flowchart shown in FIG.
• FIG. 10 is a diagram showing the change with time of the threshold.
• FIG. 11 is a view showing a temporal change of a value obtained by applying a filtering process to a torque value detected by the Tonolek sensor when the select lever is operated from the P ⁇ R position.
• FIG. 12 is a flowchart showing a process of filtering the torque value detected by the torque sensor when the torque due to inertia occurs.
• FIG. 13 is a block diagram showing an assist control unit in Embodiment 2.
• FIG. 14 is a flowchart showing operation assist processing of the assist control unit in the second embodiment.
• FIG. 15 is a state transition diagram of the assist control unit in the second embodiment.
• FIG. 16 is a graph showing temporal changes in torque value in Example 2.
• FIG. 17 is a flowchart showing operation assist processing of the assist control unit in the third embodiment.
• FIG. 18 is a state transition diagram of the assist control unit in the third embodiment.
• FIG. 19A is a graph showing temporal changes in torque value in Example 3.
• FIG. 19B is a graph showing a time-dependent change of a torque value in Example 3, and shows a case where the torque value exceeds a second threshold.
• FIG. 20 is a graph showing time-dependent changes in torque value in a state in which the second threshold is not set to a value K-fold in Example 3.
• FIG. 21 is a graph showing time-dependent changes in torque value in a state in which the second threshold value is set to a value K times that in Example 3.
• FIG. 22 is a flow chart showing operation assist processing of the assist control unit in the fourth embodiment.
• FIG. 23 is a state transition diagram of the assist control unit in the fourth embodiment.
• automatic transmission 100 includes select unit 1 and a control cable. 8, an assist actuator 9, a control cable 18, an automatic shift unit 19, and an assist control unit (assist force control device) 22.
• the select unit 1 has a select lever 2 operated by the driver, and is provided, for example, on the center cluster 3 beside the driver's seat. At the upper end of the select lever 2, a select knob 4 is attached for the driver to hold at the time of select operation. The select lever 2 is rotated about the fulcrum shaft 5.
• a push-pull control cable 8 is connected to the lower end portion of the select lever 2 via a select lever joint 7.
• the control cable 8 is rotatably connected to the input lever 10 of the assist actuator 9 via the input lever joint 11 as shown in FIG. That is, the rotational movement of the select lever 2 is converted to linear movement, and the operation force generated by the operation of the select lever 2 is transmitted to the input lever 10.
• the input lever 10 is connected to the output lever 13 via an output shaft 12 provided rotatably.
• the output shaft 12 is provided with a worm gear 14, which meshes with a motor output shaft 16 of an electric motor 15 provided with a reduction mechanism.
• a push-pull control cable 18 is connected to the output lever 13 via an output lever joint 17.
• the control cable 18 is connected to the control arm 20 of the automatic transmission unit 19. That is, the rotational movement of the output lever 13 is converted into linear movement by the control cable 18, and the combined force of the driver's operating force and the driving force of the electric motor 15 is transmitted to the control arm 20 of the automatic transmission unit 19.
• the output shaft 12 is provided with a torque sensor (input operation force detector) 21 for detecting distortion (twist) generated between the input lever 10 and the worm gear 14.
• the operation force signal detected by the torque sensor 21 is amplified by an amplification amplifier (not shown) and transmitted to the assist control unit 22 through the wire harness 23.
• the detection signal of the torque sensor 21 makes it possible to estimate the operating force in the select lever operation.
• a contact 24 for position detection is fixed to the worm gear 14.
• the contactor 24 rotates integrally with the worm gear 14 and electrically contacts a carbon resistance printed on a substrate (not shown) to output a voltage signal corresponding to the stroke angle of the select lever 2 to the assist control unit 22. Do.
• a potentiometer (operating position detector) 25 is configured.
• the potentiometer 25 detects the stroke angle of the select lever 2 at any time using the angle when the select lever 2 is stopped at the P range position as the base point angle.
• the assist control unit 22 sets a target assist force based on the detected stroke angle of the select lever 2 and the operation force of the driver, and performs PWM control of the output duty ratio of the electric motor 15.
• FIG. 3 is a block diagram showing the configuration of the assist control unit 22.
• the stroke change of the select lever 2 for which the operation range switching operation has been performed is input to the potentiometer 25 of the assist actuator 9 through the control cable 8.
• the potentiometer 25 detects a stroke angle corresponding to the amount of operation of the select lever 2 and outputs it to the assist control unit 22 as a stroke angle signal.
• the operating force of the select lever 2 is input to the torque sensor 21 of the assist actuator 9 through the control cable 8.
• the torque sensor 21 detects the operating force of the select lever 2 and outputs it to the assist control unit 22 as an operating force signal.
• the current stroke angle of the select lever 2 is determined based on the stroke angle signal. Also, from the stroke angle signal and the derivative value of the stroke angle signal and the operation force signal, the operation start and operation direction (if necessary, the operation speed and operation acceleration) of the select lever 2 are determined, and the determination result is The FF compensation table 43, the target table block 34, and the motor drive control block 45 are output.
• an intermediate stop signal is outputted to the intermediate stop prevention control block 50.
• a target operation reaction force according to the stroke angle of the select lever 2 from the stroke angle signal and the operation direction of the select lever 2 obtained by the position 'operation start' direction determination block 33, etc. Is calculated and output to the adder 35.
• the target operation reaction force for each stroke angle is stored in a table in the target table block 34.
• the adder 35 calculates the deviation between the operation force signal and the target operation reaction force, and outputs the calculation result to the FB control unit 36.
• the FB control unit 36 includes a multiplier 37, an adder 38, a multiplier 39, and an integrator 40.
• the multiplier 37 outputs a value obtained by multiplying the deviation of the operation force signal and the target operation reaction force by the proportional gain to the adder 38 (proportional output).
• the multiplier 39 outputs to the integrator 40 a value obtained by multiplying the deviation between the operating force signal and the target operating reaction force by the integral gain.
• the integrator 40 integrates the output of the multiplier 39 and outputs the result to the adder 38 (integration output).
• the adder 38 outputs a feedback assist force, which is the sum of the proportional output and the integral output, to the adder 41.
• the FF control unit 42 includes an FF compensation table 43 and a multiplier 44.
• the FF compensation table 43 outputs, to the multiplier 44, values preset according to the stroke angle signal, the operation speed and the operation acceleration.
• the multiplier 44 outputs the value obtained by multiplying the FF assist force by the FF gain, that is, the feed forward assist force to the adder 41.
• the adder 41 outputs the sum of outputs of the FB control unit 36 and the FF control unit 42 (feedback assist force + feed forward assist force), that is, target assist force to the motor drive control block 45.
• the motor drive control block 45 drives the electric motor 15 (reduction gear mechanism) based on the target assist force.
• the intermediate stop prevention control block 50 also calculates the current value and direction to be supplied to the electric motor 15 to move the select lever 2 to the normal operating range position when the select lever 2 stops in the middle, and also calculates the input signal force. It also calculates and outputs the state of the system.
• the control arm 20 of the automatic transmission 19 is provided with a rotary shaft 26.
• a detent plate 27 is supported on the rotary shaft 26.
• valleys 27b corresponding to five operation ranges (P'R'N.D.L) are formed between the cam peaks 27a.
• the detent pin 29 formed at the tip of the panel plate 28 is engaged with the valley portion 27b, and the selected operating range position is maintained, so that the intention of the operating range is not caused by the vibration of the vehicle. To prevent the selection.
• the rotary shaft 26 is rotated by the operation force of the select lever 2, and this rotation is responded to.
• the detent plate 27 moves relative to the detent pin 29.
• the detector pin 29 passes over the cam ridge 27a and engages with the valley 27b corresponding to the next operation range, and the engaged state is held by the elastic force of the panel 28. This elastic force is the main load when operating the select lever 2.
• One end of the parking pole 30 is rotatably connected to the detent plate 27.
• the parking pole 30 prevents rotation of the parking gear 32 via the cam-like plate 31 and locks a driving wheel (not shown).
• a heavy load is applied to lock the drive wheels according to the slope, and acts as a force to bite the parking pole 30.
• step S1 the assist control unit 22 reads an operating force by receiving an operating force signal of the torque sensor 21.
• step S2 the assist control module 22 reads the stroke angle by receiving the stroke angle signal of the potentiometer 25.
• step S3 the assist control unit 22 calculates the operating direction of the select lever 2 from the difference between the stroke angle of the select lever 2 and the stroke angle read in the previous control cycle.
• step S4 the assist control unit 22 calculates the operating speed of the select lever 2 from the stroke angle of the select lever 2 and the change rate of the stroke angle read in the previous control cycle, and The differential value force of is also calculated as the operation acceleration of the select lever 2, and the process proceeds to step S5.
• step S5 the assist control unit 22 carries out an FF compensation table reading process, and from among the plurality of tables set in advance from the FF compensation table, the assist control unit 22 executes the process.
• the most suitable one is selected according to the stroke angle, the operation speed and the operation acceleration.
• step S6 the assist control unit 22 executes target table reading processing, and then in step S7, the FF compensation table cursor read in step S7, etc.
• F Set the assist force (Fff setting), and shift the process to step S8.
• step S8 the assist control unit 22 sets the FB assist force (Ffb setting) from the read target table, and in step S9, the target assist force is calculated from the sum of the set FF assist force and the FB assist force. Make settings.
• step S10 the assist control unit 22 controls the output duty ratio of the electric motor 15 in accordance with the target assist force. Then, the assist control unit 22 determines whether or not the select lever 2 is in the middle stop at the question of the normal operating range position, and if it is in the middle stop, the select lever 2 is in the normal operation range. In order to return to the position, an intermediate stop prevention process is performed to calculate the drive current and drive direction of the electric motor, and the control is ended.
• the assist control unit 22 can reduce the operation load of the select lever 2 by the driver by judging the operation range position of the select lever 2 and assisting the operation of the select lever 2. It becomes possible.
• FIG. 6 is a diagram showing a torque value detected by the torque sensor 21 when the select lever 2 is operated in the P ⁇ R position direction.
• the assist assist unit 9 starts assisting the operation of the select lever 2.
• the torque value gradually increases due to the assist force by the assist actuator 9 and the operation force by the driver (arrow ⁇ in Fig. 6), and the detent pin 29 moves to a position where the detent plate 27 passes over the cam mountain 27a. Be done.
• each position of the select lever corresponds to each operation range of the automatic transmission.
• the P position, R position, N position, D position and L position of the select lever correspond to the P range, R range, N range, D range and L range of the automatic transmission, respectively.
• the assist control unit 22 has an inertia as shown by an alternate long and short dash line in FIG. 6 after the operation assist is stopped after the operation force falls below the prescribed value or the select lever 2 reaches a predetermined position.
• the torque value at which the assist assist device 9 temporarily starts the operation assist of the select lever 2 is made larger than a specified value (this torque value is set as a threshold (Thresh). ), And then gradually reduce the threshold (Thresh) to prevent unnecessary motion assist.
• step S 100 in FIG. 7 the assist control unit 22 stores the torque value detected by the torque sensor 21 as a variable Trq.
• step S101 the assist control unit 22 obtains a threshold (Thresh) obtained by changing the specified value (ConstThresh) using the arithmetic circuit shown in FIG.
• Thresn Temp X D ⁇ Delay ⁇ ⁇ 'Expression 2
• Delay Delay + femp X a ⁇ ⁇ 'Expression 3
• the threshold value (Thresh) can be obtained by substituting each value into the equation of.
• the variable Delay has an initial value preset, and q_1 shown in FIG. 8 represents a delay of one sample time.
• the assist control unit 22 compares Trq with Thresh in step S102. If Trq> Thresh, the assist control unit 22 returns the process to step S100. If Trq> Thresh, the assist control unit 22 starts the operation assist of the select lever 2 by the assist actuator 9 in step S103.
• the process from step S10 to step S102 shows the process of "A: stop state" before the assist actuator 9 performs the operation assist of the select lever 2 as shown in FIG. Is
• the threshold value is temporally reduced while the electric motor 15 is stopped by repeatedly executing the process of step S101 by the loop process of steps S101 to S102.
• step S104 in the assist control unit 22, the position of the select lever 2 falls to a predetermined place, specifically, the detent pin 29 falls into the groove of the next cam mountain 27a.
• step S103 to step S104 is the "B: assist state” process shown in FIG. 9, and the concrete process content is to execute steps S1 to S11 shown in FIG.
• step S101 When the position of the select lever 2 is moved to the R position, the assist control tool 22 ends the operation assist of the select lever 2 by the assist actuator 9 in step S105, and the step S106. Set the value of Delay to 0 at. After this, the assist control unit 22 repeats the process from step S100 again. At this time, since it is the value power O of Delay, in step S101
• step S105 and step S106 is the process of "C: stop preparation state" shown in FIG.
• the assist control unit 22 can prevent unnecessary operation assistance by temporarily increasing the threshold (Thresh). . After that, by lowering the threshold (Thresh) gradually, the gear of the automatic transmission is moved to the next position. In this case, it is easy to apply a somewhat large initial operation force by operating the select lever 2 It is possible to execute the motion assist operation.
• the torque value detected by the torque sensor 21 is reduced by using a low pass filter after the operation assist of the select lever 2 by the assist actuator 9 is stopped, and the inertia is caused. It is also effective to prevent the torque to become higher than the specified value (ConstThresh).
• step S200 of FIG. 12 the assist control unit 22 substitutes 1 into the variable a as an initial value, and substitutes 0 into the variable Delay. Thereafter, at step S201, the assist control unit 22 stores the torque value detected by the torque sensor 21 as a variable Trq.
• step S202 the assist control unit 22 determines whether the value of the variable a is 1 or more. If a is smaller than 1, the variable a is squared to the variable a in step S203. A value is substituted, and if a is 1 or more, a value of 1 is substituted for the variable a in step S204. Thereafter, in step S205, the assist control unit 22 executes an operation in which a low pass filter represented by the following equation is applied to the torque value detected by the torque sensor 22.
• variable Delay a
• variable T rq2 into which the filtered torque value is substituted are used!
• Trq2 Delay ... Equation 4
• Delay Delay + frq-Delay) X a ' ⁇ ' Equation 5
• Assist control unit 22 determines whether Trq 2 subjected to the filtering process in step S 206 has a value larger than a prescribed value (ConstThresh). The processing up to step S206 is repeated.
• variable a is smaller than 1 in step S 202, the smaller the variable a, the more time it takes to increase the variable Delay, and the larger the time constant of the low noise filter.
• the value of the variable a is set to 1, according to equation 5.
• Trq and Trq2 have the same value of Delay, the torque value detected by the torque sensor 21 is compared with the specified value (ConstThresh) without filtering.
• Trq2 is larger than the prescribed value (ConstThresh)
• the assist assist device 9 starts the operation assist of the select lever 2, and as shown in step S208. Specifically, until the detent pin 29 falls into the groove of the next cam mountain 27a, the operation assist of the select lever 2 by the assist actuator 9 is continued until the position of the select lever 2 moves beyond the predetermined position. Ru.
• step S210 a sufficiently small constant a-const is substituted for the variable a, and the process from step S201 is repeated.
• Step S210 by substituting a sufficiently small value for the variable a, much time is required to become Trq2> ConstThresh by the processing of Step S201 to Step S206. Therefore, it plays a role as a low pass filter. It is possible to prevent the operation assist processing of the continuous select lever 2 caused by the inertia force of the select lever 2 immediately after the operation assist stops.
• the operation range selection mechanism according to the present invention is not limited to the above configuration.
• the operation range selection mechanism according to the second embodiment will be described below.
• the automatic transmission using the operation range selection mechanism in the second embodiment differs from the automatic transmission described in the first embodiment in that the assist control of the assist control unit is different.
• the components other than the assist control unit are the same as those of the first embodiment, and therefore, the description will be made using the same reference numerals, and the description in the second embodiment will be omitted.
• FIG. 13 is a block diagram showing the assist control unit 22a according to the second embodiment.
• the assist control unit 22 a differs from the assist control interface 22 described in the first embodiment in that the PL direction start operation force calculation unit 60, the LP direction start operation force calculation unit 61, and the PL direction start operation force calculation unit 60. And a torque direction detected by the torque sensor 21 and an LP direction start judgment unit 63 which similarly compares the torque value with each other.
• PL direction start operation force calculation unit 60 is configured to provide an assist control tool when an operation force directed from P position direction to L position direction (P ⁇ L direction) is applied to select lever 2. 22a calculates and sets the first threshold (the first predetermined value), which is used as a criterion for determining the force / no force at which operation assistance is started in the P– L direction.
• the assist control unit 22a is L-P Calculate / set a second threshold (second specified value) as a criterion for determining whether to start operation assistance in the direction.
• the assist control unit 22a determines that the select lever 2 is being moved in the PL direction, and starts operation assist in the PL direction.
• the L 1 P direction activation operation power calculation unit 61 When the torque value exceeds the second threshold (second specified value) set by the parameter, the assist control unit 22a determines that the select lever 2 is being operated in the L-P direction, and L 1 P Start motion assist in the direction.
• the operating force is not applied to the select lever 2 and the torque value in the state where the operation assist is not performed is taken as a reference ( ⁇ 0), and the operating force in the PL direction is obtained.
• the torque value detected by the torque sensor 21 is a positive torque value when L is added, and the torque value detected by the torque sensor 21 is negative when the operation force is applied in the L-P direction. The explanation is given as the torque value of.
• FIG. 14 is a flow chart showing a process of assisting the operation of the select lever 2 by the assist control unit 22a
• FIG. 15 is a state transition diagram of the assist control unit 22a in the process shown in FIG. The operation assist processing of the assist control unit 22a will be described below with reference to FIGS. 14 and 15.
• the assist control unit 22 a first sets a threshold value for starting the operation assist using the PL direction activation operating force computing unit 60 and the LP direction activation operating force computation unit 61. Specifically, when the select lever 2 is operated in the PL direction in the PL direction start operation force calculation unit 60, the first threshold (positive value) for starting the operation assist in the PL direction is set. (Step S. 301) Then, in LP direction start operation force calculation unit 61, the second threshold for starting operation assist in L 1 P direction when the select lever is operated in LP direction (negative To set the value of (step S. 302). The first threshold value and the second threshold value can also be changed in accordance with the position of the select of the select lever 2 detected based on the stroke angle signal of the potentiometer 25 or the like.
• the assist control unit 22a reads a torque value based on the operation force signal received from the potentiometer 21 (step S. 303). Thereafter, the assist control unit 22a uses the PL direction start determination unit 62 to read the read torque value It is determined whether the force is a value equal to or greater than one threshold (step S. 304). If the torque value is not equal to or greater than the first threshold (in the case of NO at step S. 304), assist control unit 22a uses LP direction activation determination unit 63 to determine whether the torque value is equal to or less than the second threshold. (Step S. 305). If the torque value is not equal to or less than the second threshold (NO in step S. 305), the process of reading the torque value is repeated (step S. 303).
• the stop state 65 of the state transition diagram shown in FIG. 15 indicates a state in which the operation assist is not performed.
• the “1. start determination” process of the STOP effective process corresponds to the process of comparing the torque value with the first threshold and the second threshold (steps S. 304 and S. 305). As described above, when the torque value is less than or equal to the first threshold and greater than or equal to the second threshold, the stopped state 65 is maintained.
• assist controller unit 22a determines that select lever 2 has been moved in the P ⁇ L direction, and moves in the P ⁇ L direction. Start motion assist (step S. 306). When the motion assist in the PL direction is started, the transition state of the assist control tool 22a moves from the stop state 65 of FIG. 15 to the PL assist state 66.
• FIG. 16 is a diagram showing that the operating force is applied to the select lever 2 in the PL direction, and the torque value detected by the torque sensor 21 increases in the positive direction.
• the operating force is applied to the select lever 2 to increase the torque value, and when it exceeds the first threshold value, the assist control unit 22a starts the operation assist.
• the assist control unit 22a determines the movement position of the select lever 2 based on the strike angle signal received from the potentiometer 25, and the select lever 2 is at a predetermined position adjacent to the PL direction. When moved to the position, it is judged that the operation assist assist stop condition is satisfied (step S. 307), and the operation assist is stopped (step S. 308). In the state transition diagram shown in FIG. 15, when it is determined by the process of step S. 307 that the assist stop condition is satisfied, the transition state moves to the PL stop preparation state 67.
• assist control unit 22a After stopping operation assist (step S. 308), assist control unit 22a again sets the first threshold (positive value) in PL direction activation operation force calculation unit 60 (step Steps S. 309), LP direction start operation force calculation unit 61 sets the second threshold (negative value) (step S. 310), and the torque value reading process at the moved position (step S. 303) Repeat).
• steps S. 309 and S. 310 it may be desirable to change the set value of the threshold depending on the moved position etc. in setting the first threshold and the second threshold. Also, as in Example 3 described later, the threshold value may be temporarily changed to a high value or a low value.
• step S In PL stop preparation state 67 of the state transition diagram shown in FIG. 15, the “1. assist stop” process corresponds to the process of step S. 308, and the “2. PL direction activation determination threshold setting” process is step S
• the process of step S. 310 corresponds to the process of step S. 310. After the completion of the three processes (steps S308 to S. 310), the transition state shifts to the stop state 65.
• assist control unit 22a determines that select lever 2 has been moved in the L-P direction, and the L-P direction. Start motion assist (step S. 311). Thereafter, the assist control module 22a performs the motion assist stop condition determination in the same manner as the processing described in steps S. 307 to S. 310 (step S. 312) and the stop condition is satisfied. Stops the motion assist (step S. 313), sets the second threshold (step S. 314), sets the first threshold (step S. 315), and reads the torque value (step S. 313). Repeat step 303). Also in the transition state diagram, the LP assist state 68 (step S. 311) is entered, and then the LP stop preparation state 69 (steps S. 313 to S. 315) is passed to the stop state 65 (step S. 303). And transition.
• the assist control unit 22a when the assist control unit 22a obtains a torque value equal to or greater than the first threshold (positive value) according to the torque value detected by the torque sensor 21, the assist control unit 22a moves in the PL direction. If it is determined that the operation force has been applied, operation assist in the PL direction is started, and if a torque value equal to or less than the second threshold (negative value) is obtained, the operation force is applied in the L-P direction. Since the operation assist in the LP direction is started, it is possible to determine the operating direction of the select lever 2 by the driver from the torque value, and the driver can reliably and stably operate in the operating direction. Action It becomes possible to perform a cyst.
• the operation range selection mechanism according to the second embodiment two threshold values of the first threshold value and the second threshold value are set according to the operation direction of the lever 2 for celery, and the detected torque value is the first threshold value or the second threshold value. It is characterized in that the operation direction of the select lever 2 is determined based on which of the above threshold values is exceeded.
• the detent pin 29 falls into the groove of the cam peak 27a at the next shift position as the select lever 2 moves. The inertia force is generated by retraction and decreases rapidly (
• the detent pin 29 that obtains the torque generated by the inertia force strikes the end face of the next cam peak, and the torque value temporarily increases. It becomes large (torque due to inertia in Fig. 6).
• the operation assist may be generated due to the torque value which decreases rapidly due to inertia.
• the operation range selection mechanism according to the third embodiment has the same configuration as the operation range selection mechanism described in the second embodiment, and thus the description thereof is omitted and the description will be made using the same reference numerals.
• FIG. 17 is a flowchart showing a process of assisting the select lever 2 with the assist control unit 22a of the automatic transmission using the operation range selection mechanism according to the third embodiment.
• FIG. 18 is a state transition diagram of the system control suite 22 in the process shown in FIG.
• FIG. 19A shows how torque value detected by the torque sensor 21 increases as the operating force is applied to the select lever 2 in the PL direction, and the graph shows changes over time of the torque value.
• FIG. 19B is a graph showing the change with time of the torque value, showing that the operating force is applied in the L-P direction to the select lever 2 and the torque value detected by the torque sensor 21 decreases. It is.
• Assist control unit 22a sets a first threshold value (positive value) for starting motion assist in the PL direction (step S. 301), and then, assists in motion in the L-P direction. Setting a second threshold (negative value) to start (step S. 302).
• the assist control unit 22a performs threshold calculation processing (step S. 401) of the set first threshold and second threshold.
• the threshold calculation process is the first threshold temporarily set to a high value in the setting of the first threshold and the second threshold after stopping the operation assist (steps S. 402 to S. 405), which will be described later.
• the second threshold value set to a low value is returned to the reference threshold value by taking a certain time, and the threshold value is aged using the equations 1 to 3 described in the first embodiment. Process to gradually return.
• the assist control unit 22a reads a torque value based on the operation force signal received from the potentiometer 21 (step S. 303).
• the assist control unit 22a uses the PL direction activation determination unit 62 to determine whether or not the read torque value is a value equal to or greater than the first threshold (step S. 304). If the torque value is not equal to or greater than the first threshold (in the case of NO in step S. 304), it is determined whether the torque value is equal to or less than the second threshold using the LP direction activation determination unit 63 (step S. 305). If the torque value is not equal to or less than the second threshold (in the case of NO at step S. 305), the processing is shifted to threshold calculation processing (step S. 401).
• start determination process of the STOP execution process compares the torque value with the first threshold and the second threshold (step S. 304, step S 305), and “2.
• Start-up determination threshold calculation” indicates threshold calculation processing (step S. 401).
• assist controller unit 22a determines that the select lever has been moved in the P ⁇ L direction, and moves in the P ⁇ L direction. Start motion assist (step S. 306).
• the transition state of the assist control unit 22a moves from the stop state 65 shown in the state transition diagram of FIG. 18 to the PL assist state 66.
• the assist control unit 22a determines the movement position of the select lever 2 based on the strike angle signal received from the potentiometer 25, and the select lever 2 is positioned at a predetermined position adjacent to the PL direction.
• the operation assist assist stop condition is satisfied (step S. 307), and the operation assist is stopped (step S. 308).
• Fig. 18 ⁇ State transition diagram shown ⁇ [Processing of Step S. 307] If it is determined that the assist stop condition is satisfied from this, the transition state moves to the PL stop preparation state 67.
• assist control unit 22a After stopping the operation assist (step S. 308), assist control unit 22a again sets the first threshold (positive value) using PL direction activation operation force calculation unit 60 (step S. 402), and further, the second threshold (negative value) is set using the 'BR> KP direction activation operation calculation unit 61 (step S. 403). Since the threshold value is temporarily changed to a high value as shown in FIG. 19A by the process of setting the first threshold value in step S. 402, the torque caused by inertia as described in the first embodiment. Thus, even when the torque value is temporarily high, it is possible to prevent the operation assist from being started.
• the assist control unit 22a uses the LP direction activation operation calculation section 61 to multiply the second threshold as the reference of the operation assist by K (K is Set a constant, for example, 2) lower value.
• K is Set a constant, for example, 2) lower value.
• the rate of decrease is that the detent pin 29 which has obtained the torque generated by the inertia force then strikes the end face of the next cam peak and the torque value is temporarily It is larger than the rate of increase (torque due to inertia in FIG. 6, ⁇ shown in FIGS. 20 and 21). For this reason, when the second threshold is decreased at the same rate as the first threshold, as shown in FIG.
• the torque value decreased after stopping the operation assist is equal to or less than the second threshold (torque value ⁇ first If the torque value becomes less than the second threshold, operation assist is started in the reverse direction (L-L direction) to the operating direction ( ⁇ -L direction) of the select lever 2 When moving the select lever 2 in the PL direction, the driver feels a sense of tension from the lever There is a risk of Therefore, in step S. 403, the assist control unit 22a sets the second threshold value to a lower value by a factor of K, and as shown in FIG. 21, the decreasing torque value becomes smaller than the second threshold value. Let's do it.
• the “1. Assist stop” process of the PL, STOP state transition processing in the PL stop preparation state 67 of the state transition diagram shown in FIG. 18 corresponds to the process of step S.
• the process of step S. 402 corresponds to the process of “determination threshold setting”, and the process of step S. 403 corresponds to the process of “3.
• the transition state shifts to the stop state 65, and the assist control unit 22a executes the threshold calculation process (step S. 401) again. .
• the inertia can be reduced. It is possible to prevent the operation assist from being performed again by the increase in torque caused by the torque and the rapid decrease in torque due to the inertia force.
• the second threshold value is set to a value that is K times lower, motion assist in the L-P direction is performed when the select lever is operated, and it is possible to prevent giving a sense of tension to the lever operation. Can.
• assist control unit 22a determines that select lever 2 has been moved in the L-P direction, and L—Starts motion assist in the P direction (step S. 311). Thereafter, the assist controller unit 22a determines the stop condition of the operation assist (step S. 312) in the same manner as the processing described in steps S. 307 to S. 310 (step S. 312). Stop (step S. 313), set the second threshold (step S. 404), set the first threshold (step S. 405), and execute the threshold calculation process (step S. 401) again. .
• step S405 when the select lever 2 moves in the L-P direction, the value of the first threshold value is set to prevent the operation assist in the P-L direction due to the rapid increase in torque due to the inertia force. Set K times higher than the value.
• step S. 311 the stop state 65 to the LP assist state 68 (step S. 311) [this transition is made, and then [the LP stop preparation state 69 (steps S. 313, S404, S. Go through the step 405) to the stop state 65 (step S. 401).
• the second threshold is set to a low value
• the first threshold is set to a high value. The decrease in torque and the rapid increase in torque due to the inertia force can prevent operation assistance from being performed again.
• the first threshold value to a value that is ⁇ times higher, operation assist in the PL direction is performed when the select lever 2 is operated, and a sense of tension may be given to the lever operation. It can be prevented.
• the selection lever 2 Even when the selector lever 2 is operated continuously so as not to give the driver a sense of incongruity in the motion assist, the driver does not give a sense of tension when passing the position.
• the first threshold is set to a high value and the second threshold is set to a low value after the operation assist is stopped, for example, contact with the gate of the select lever, etc. Even in the case where torque fluctuation occurs due to, etc., it is possible to easily prevent the occurrence of unintended operation assist that the torque value exceeds the first threshold and the second threshold.
• the assist select mechanism according to the present embodiment is not limited to the one described above.
• the value of the first threshold set to a high value is gradually decreased, and the value of the second threshold set to a low value is gradually increased.
• the first threshold value is increased until a predetermined time elapses, specifically, until a time period in which the torque value may increase or decrease due to inertia and the first threshold value and the second threshold value may be exceeded, (2)
• the threshold may be lowered, and the threshold may be returned to the original value after the period has elapsed.
• a torque sensor detects a torque value (operating force) applied to the select lever, and when the detected torque value is equal to or greater than a predetermined value, a motor or the like is activated and the select lever is selected. It has a structure to perform motion assist. Also, in general motion assist, as described in the first to third embodiments, the operation position of the select lever is detected by a potentiometer or the like, and the select lever is moved to a predetermined position (stop position) adjacent to the position. It is stopped by the thing.
• the adjacent position is only the R position
• the select lever is positioned at the L position
• the adjacent position is only the D position. Only exists. Therefore, when the operating force is applied from the P position in the side direction of the wall (opposite to the R position) or in the direction from the L position to the side of the wall (opposite to the D position), There is a problem that it is not possible to use the control condition of "stop the operation assist when the select lever is moved to the stop position".
• the driver does not operate the operation button provided on the select lever, and the select lever is positioned at the P position to another position. (Specifically, it can not move to the adjacent R position). For this reason, when the operating force is applied to the select lever without operating the operating lever at the P position, there is a problem that the operation assist is performed in the P position and a vibration or the like is generated. As against the vibration at the P position, the driving force of the motor is limited to prevent the reverse of the operation assist direction of the motor against the vibration at the P position as in the invention disclosed in Japanese Patent Application No. A technology to prevent vibration by doing so is considered.
• An object of the present invention is to provide an operation range selection mechanism capable of preventing the select lever from moving in the direction of D position due to the operation assist in the direction of yon.
• the operation range selection mechanism according to the fourth embodiment has the same configuration as that described in the first embodiment, so the description thereof is omitted and the same reference numerals are used for the same parts. Do.
• FIG. 22 is a flowchart showing operation assist processing performed by the assist control unit 22 of the automatic transmission using the operation range selection mechanism according to the fourth embodiment.
• the assist control unit 22 sets S top to the variable State, and sets an activation threshold to the variable ConstThresh.
• the variable State is a variable that shows the transition state in the state transition diagram shown in FIG. 23.
• stop state 70 When no operation assist is performed (stop state 70), set Stop, and move to the PL direction.
• PL assist state 71 If motion assist is being performed (PL assist state 71), set PL – Assist. If motion assist in the L-P direction is performed (LP assist state 72), set LP – Assist.
• the activation threshold is a threshold serving as a reference at which the operation assist starts, and is, for example, a value corresponding to 0.3 N ⁇ m or the like.
• step S. 501 assist control unit 22 substitutes the torque value of the operating force signal detected by torque sensor 21 in variable Trq, and substitutes the stroke angle signal detected by potentiometer 25 in variable Pos. Do. Thereafter, the assist control unit 22 determines in step S. 502 whether or not the variable State is Stop. Here, since the variable State is set to Stop in step S. 500, the assist control unit 22 determines YES and shifts the process to step S. 503.
• Thresh Temp X b— Delay equation 2
• Delay Delay + Temp X a ... Formula 3
• FIG. 8 is a block diagram showing the configuration of an arithmetic unit that performs these operations, and q- 1 represents a delay of one sample time.
• step S. 504 assist control unit 22 determines whether the torque value substituted into variable Trq in step S. 501 is larger than the threshold (Thresh) calculated in step S. 503. If it is larger (if YES), the process proceeds to step S. 506, and if smaller (if NO), the process proceeds to step S. 505.
• step S. 505 as in step S. 504, it is determined whether the torque value substituted in the variable Trq in step S. 501 is smaller than the threshold ( ⁇ Thresh), and it is small! If (YES), the process proceeds to step S. 507. If (YES), the process proceeds to step S. 501. That is, while the assist control unit 22 has a threshold (one threshold) torque value (threshold), specifically, until the select lever 2 is sufficiently moved, the steps S. 501 to S. The processing operation 505 is repeatedly executed.
• a large threshold (Thresh) is first set and its value is lowered in a time constant manner. It is possible to converge to the specified value (ConstThresh). This is because, when the select lever 2 is moved (turned), when the detent pin 29 passes over the cam mountain 27a and falls into the valley 27b, the detent pin 29 hits the end face of the next cam mountain 27a by inertia force. Therefore, as shown in FIG. 6, the torque value generated in the torque sensor 21 temporarily increases, and there is a possibility that the operation assist will be performed again after exceeding the specified value (ConstThresh). It is the
• step S. 504. when the torque value increases and becomes larger than the threshold (Thresh) by moving (pivoting) the select lever 2 in the PL direction, it is determined as YES in step S. 504. Then, the process proceeds to step S. 506. Also, select lever 2 is moved in the L-P direction. If the torque value is reduced and becomes smaller than the threshold (one threshold) by moving (turning), it is determined as YES in step S. 505 and the process proceeds to step S. 507. At the time of determination processing in step S. 504 and step S. 505, the torque value generated in the torque sensor 21 is rapidly increased as shown in FIG. I do not want to
• the torque value generated in the torque sensor 21 increases as the select lever 2 moves (turns), while the time elapses.
• the threshold (Thresh) obtained in step S. 503 is lowered, so that it is determined as YES in step S. 504 after a predetermined time (for example, after several tens of milliseconds). That is, the torque value substituted into the variable Trq in step S. 501 exceeds the threshold (Thresh) after a predetermined time.
• step S. 506 assist control unit 22 sets PL ⁇ A ssist in variable State, and from the stroke angle signal obtained in step S. 501, position or position P, R, N of select lever 2 is set. , D, L, and substitute the obtained values of P, R, N, D, L into the variable P osition, and set the lower limit value of the duty of the motor drive control unit (motor drive control block) 45 to 5 Set to%.
• step S. 505 As the threshold (Thresh) obtained in step S. 503 rises with the passage of time, it is determined as YES in step S. 505 after a predetermined time (for example, after several tens of milliseconds). That is, the torque value substituted into the variable Trq in step S. 501 becomes equal to or less than the threshold (Thresh) after a predetermined time.
• step S. 507 assist control unit 22 sets LP-A ssist in variable State, and from the stroke angle signal obtained in step S. 501, position or position P, R, N of select lever 2 is set. , D, L, and substitute the obtained values of P, R, N, D, L into the variable P osition, and set the lower limit value of the duty of the motor drive control unit (motor drive control block) 45 to 5 Set to%.
• step S. 506 or step S. 507 the assist control unit 22 returns the process to step S. 501 to obtain the latest operation force signal (torque value) and the stroke angle signal.
• the present embodiment is an invention for avoiding the generation of motion assist in the opposite direction when an operation force directed in the wall direction is applied to select lever 2 positioned at L position. There is a force in the P-L direction applied to the select lever 2, so it is judged as YES in step S. 504, and PL-Assist is set in the variable State in step S. While the value of L is substituted, the lower limit value of the duty of the motor drive control unit (motor drive control block) 45 is set to 5%.
• step S. 502 since the variable State is set to PL— Assist and is not St op in step S. 506, the assist select control unit 22 determines NO and the process is processed in step S. 508. Go to
• step S. 508 it is determined whether the variable State is LP—Assist.
• the assist control unit 22 determines NO and shifts the processing to step S. 509.
• step S. 509 assist control unit 22 determines whether or not variable State is PL ⁇ A ssist. Since the variable State is set to PL-Assist in step S. 506, the assist control unit 22 determines YES and shifts the process to step S. 510.
• step S. 510 the position of the select lever 2 is determined. This compares the value (voltage value) of the array StopPL corresponding to the stop position preset for each position with the latest stroke angle signal acquired in step S.501, and stops the operation assist. Determine if the selector lever position (stop position) is exceeded. That is, if the stop position is exceeded, it is judged as YES and the process proceeds to step S. 511. If not, it is determined as NO and the process proceeds to step S. 512.
• the assist control unit 22 shifts the processing to step S. 512.
• the assist control unit 22 performs the processing in step S. 511. , Sets the variable State to Stop, shifts the transition state to the stop state 70, stops the operation of the motor drive control unit 45, sets the variable Delay to zero, and returns the process to step S. 501. .
• step S. 512 it is determined whether or not the torque value obtained in step S. 501 is 0.2 N'm or less and the electric motor 15 is driven at a duty of 5%. If this condition is not satisfied (in the case of NO), the assist control unit 22 shifts the process to step S. 513. If the condition is satisfied (in the case of YES), the process proceeds to step S. Move to 514.
• step S. 513 assist control unit 22 sets the count value of the internal counter (Count) to zero, performs proportional control in step S. 515, and drives electric motor 15 to operate. Execute assist processing, and return the processing to step S. 501.
• steps S. 501, S. 502, S. 508, S. 509, S are performed after execution of the operation assist process of step S. 515.
• Execute operation assist processing by repeating the processing of 510, S. 512, S. 513, and S. 515
• step S. 512 the operation assist is continuously executed until the electric motor 15 is driven at a duty of 5%.
• the face-to-face motion assist is performed repeatedly and continuously on the wall side.
• step S. 512 When the torque value is less than or equal to 0.2 N'm and the electric motor 15 is further driven at a duty of 5%, the process proceeds from step S. 512 to step S. 514.
• step S. 514 assist control unit 22 substitutes “1” for the value of the internal counter, and in step S. 516 determines whether or not the count value of the internal counter has become larger than “20”. If it is not large (in the case of NO), the process proceeds to step S. 515. If it is large (in the case of YES), it proceeds to step S. 517.
• steps S. 500, S. 501, S. 502, S. 504, and S. 506 are performed.
• 509, S. 510, S. 512, S. 513, S. 515 are repeated. That is, the operation assist is performed until the torque value of the torque sensor 21 is 0.2 Nm or less and the electric motor 15 is driven at a duty of 5%.
• step S. 514 the assist control unit 22 shifts the processing to step S. 514, and in step S. 516 until the internal counter count value force S “20” is exceeded.
• Steps S. 501, S. 502, S. 508, S. 509, S. 512, S. 514, S. 516, S. 515 are repeated to continue the operation assist process.
• step S. 516 when the count value of the internal counter exceeds 20, assist control unit 22 shifts the process to step S. 517 and sets Stop to the variable State. The operation is stopped, the variable Delay is set to zero, the count value of the internal force is set to zero, and the processing of step S. 501 is repeatedly executed.
• the torque value of the torque sensor 21 is 0.2 N'm or less, and the duty of the electric motor 15 is 5%.
• a certain amount of time elapses until the stop of the process, specifically, until the count value of the internal counter reaches "20" (steps S. 501, S. 502, S. 508, S. 509, Processing time force of S. 510, S. 512, S. 514, S. 516, S. 515
• it is 10 ms, a total of 200 ms
• the torque sensor 21 is generated simultaneously with the stop of the electric motor 15 and the balance of torsion is broken and a torque in the opposite direction is generated, and the operation assist is performed in the L ⁇ P direction” It becomes possible to avoid the inconvenience.
• step S. 500 If the select lever 2 is moved in the L-P direction, the process proceeds to steps S. 500, S. 501, S. 503, S. 504, S. 505, S. 507. Force S Advance, step S. 507, set variable LP to Assist, and proceed to steps S. 501, S. 502, S. 503.
• step S. 503 the variable State becomes LP.
• step S. 518 Because of being Assist, the process proceeds to step S. 518, and in step S. 518, proportional control is performed until the select lever 2 reaches the stop position to drive the motor drive control unit 45 to perform operation assist.
• step S. 520 the variable State is set to Stop, the transition state is changed to Stop, and the operation of the motor drive control unit 45 is stopped, Set the variable Delay to zero and return the process to step S. 501.
• An automatic transmission system comprising an automatic transmission and the above-mentioned // operating range selecting device is also one of the present invention.
• an automobile equipped with any one of the above operating range selecting devices is also one of the present invention.

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• 2005
  • 2005-10-12 EP EP05793152A patent/EP1818569A4/de not_active Withdrawn
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